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Navien combi

347

347 Member Posts: 149

September 17 edited September 19 in THE MAIN WALL

Hello,

I have a customer that has a Navien combi boiler. It is currently hooked up to city water (Port Washington, NY). The homeowner is installing a whole house water filtration system including a water softener. I need to re-pipe most of the water piping in the house. Should I keep the boiler on "city water" or connect to the new filtered/softened water? I thought I remember reading that "soft" water in no good for these boilers (and most high efficiency ones). Any input would be greatly apricated.

Thank you.

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Comments

EBEBRATT-Ed Member Posts: 18,521

September 17

@Jamie Hall or @hot_rod will respond

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hot_rod Member Posts: 25,648

September 17

typically the boiler is filled and little if any water gets added
If you have water that is way out if the spec that Navian suggests,

fill the boiler thru one of these
https://s3.amazonaws.com/s3.supplyhouse.com/product_files/Axiom-PUROPAL-1-Brochure.pdf
I also like to add a conditioner to the filtered water
I would not use softened water to fill the boiler!

Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream
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Jamie Hall Member Posts: 26,350

September 17

Keep the boiler on city water. Softened water is remarkably aggressive, and you really don't want that in your boiler…

Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
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347 Member Posts: 149

September 18

Thank you for the responses.

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Mad Dog_2 Member Posts: 8,321

September 19

We have excellent water in Nassau County vis-a-vis other regions. I wouldn't hesitate to connect to Port water. Mad Dog

Consulting by Mad Dog & Matt Jr.
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